/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.flink.table.annotation;

import org.apache.flink.annotation.PublicEvolving;

/**
 * Logical version that describes the expected behavior of the reflection-based data type extraction.
 *
 * <p>This enumeration is meant for future backward compatibility. Whenever the extraction logic is changed,
 * old function and structured type classes should still return the same data type as before when versioned
 * accordingly.
 */
@PublicEvolving
public enum ExtractionVersion {

	/**
	 * Default if no version is specified.
	 */
	UNKNOWN,

	/**
	 * Initial reflection-based extraction logic according to FLIP-65.
	 */
	V1
}
